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Cheap flights from Louisville to Sydney from $673

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Louisville to Sydney departing on 8/15. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Sydney

Cheap round-trip flights

Enter your travel dates to find the best prices.
Qantas Airways Logo
6:32 pm - 8:50 pm-
34h 18m
Qantas Airways Logo
2:05 pm - 5:35 pm-
19h 30m
$1,290Qantas Airways
Wed, Jan 27 - Sat, Feb 13
Qantas Airways Logo
6:32 pm - 8:50 pm-
34h 18m
Qantas Airways Logo
2:05 pm - 5:35 pm-
19h 30m
$1,291Qantas Airways
Thu, Jan 28 - Sat, Feb 13
Qantas Airways Logo
6:32 pm - 8:50 pm-
34h 18m
Qantas Airways Logo
2:05 pm - 5:35 pm-
19h 30m
$1,291Qantas Airways
Wed, Jan 27 - Sat, Feb 13
Qantas Airways Logo
6:32 pm - 8:50 pm-
34h 18m
Qantas Airways Logo
2:05 pm - 5:35 pm-
19h 30m
$1,293Qantas Airways
Wed, Jan 27 - Sat, Feb 13
Delta Logo
12:39 pm - 8:30 am-
27h 51m
Delta Logo
10:40 am - 12:05 am-
29h 25m
$1,311Delta
Tue, Dec 1 - Tue, Dec 8
Delta Logo
9:45 am - 6:50 am-
31h 05m
Delta Logo
9:15 am - 8:33 pm-
25h 18m
$1,312Delta
Mon, Sep 14 - Mon, Sep 21
Delta Logo
12:39 pm - 8:30 am-
27h 51m
Delta Logo
10:40 am - 12:05 am-
29h 25m
$1,312Delta
Tue, Dec 1 - Tue, Dec 8
United Airlines Logo
1:50 pm - 6:55 am-
27h 05m
United Airlines Logo
10:20 am - 7:07 pm-
22h 47m
$1,361United Airlines
Tue, Sep 1 - Wed, Sep 9
United Airlines Logo
1:55 pm - 9:20 am-
27h 25m
United Airlines Logo
9:20 am - 1:33 pm-
20h 13m
$1,361United Airlines
Tue, Dec 1 - Tue, Dec 8
United Airlines Logo
1:55 pm - 9:20 am-
27h 25m
United Airlines Logo
9:20 am - 1:33 pm-
20h 13m
$1,362United Airlines
Tue, Dec 1 - Tue, Dec 8

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United Airlines flights from Louisville to Sydney

Our best United Airlines deals on Louisville to Sydney flight tickets
United Airlines
Aug 5
SDF3:25 pmLouisville Intl
25h 35m
2 stops
SYD7:00 amSydney Kingsford Smith
Aug 12
SYD10:20 amSydney Kingsford Smith
25h 55m
2 stops
SDF10:15 pmLouisville Intl
$1,241
United Airlines
Aug 6
SDF8:00 amLouisville Intl
32h 55m
2 stops
SYD6:55 amSydney Kingsford Smith
Aug 13
SYD10:20 amSydney Kingsford Smith
42h 09m
2 stops
SDF2:29 pmLouisville Intl
$1,354
United Airlines
Dec 1
SDF1:55 pmLouisville Intl
27h 25m
2 stops
SYD9:20 amSydney Kingsford Smith
Dec 8
SYD9:20 amSydney Kingsford Smith
20h 13m
1 stop
SDF1:33 pmLouisville Intl
$1,361

Qantas Airways flights from Louisville to Sydney

Our best Qantas Airways deals on Louisville to Sydney flight tickets
Qantas Airways
Jan 27
SDF6:32 pmLouisville Intl
34h 18m
2 stops
SYD8:50 pmSydney Kingsford Smith
Feb 13
SYD2:05 pmSydney Kingsford Smith
19h 30m
1 stop
SDF5:35 pmLouisville Intl
$1,290
Qantas Airways
Jan 27
SDF6:32 pmLouisville Intl
34h 18m
2 stops
SYD8:50 pmSydney Kingsford Smith
Feb 13
SYD2:05 pmSydney Kingsford Smith
19h 30m
1 stop
SDF5:35 pmLouisville Intl
$1,291
Qantas Airways
Sep 14
SDF4:19 pmLouisville Intl
24h 36m
1 stop
SYD6:55 amSydney Kingsford Smith
Sep 21
SYD12:00 pmSydney Kingsford Smith
23h 43m
1 stop
SDF9:43 pmLouisville Intl
$1,293

momondo Fare Finder

 
Customize your flight search to find flights from Louisville to Sydney that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 4, 2026.
Use the filters below to find and compare flights from Louisville to Sydney that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 1/27

6:32 pm-8:50 pm

2 stops34h 18m

Sydney Kingsford Smith

Sat 2/13

2:05 pm-5:35 pm

1 stop19h 30m

$1,290

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Thu 1/28

6:32 pm-8:50 pm

2 stops34h 18m

Sydney Kingsford Smith

Sat 2/13

2:05 pm-5:35 pm

1 stop19h 30m

$1,291

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 1/27

6:32 pm-8:50 pm

2 stops34h 18m

Sydney Kingsford Smith

Sat 2/13

2:05 pm-5:35 pm

1 stop19h 30m

$1,291

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Wed 1/27

6:32 pm-8:50 pm

2 stops34h 18m

Sydney Kingsford Smith

Sat 2/13

2:05 pm-5:35 pm

1 stop19h 30m

$1,293

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

12:39 pm-8:30 am

2 stops27h 51m

Sydney Kingsford Smith

Tue 12/8

10:40 am-12:05 am

2 stops29h 25m

$1,311

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Mon 9/14

9:45 am-6:50 am

2 stops31h 05m

Sydney Kingsford Smith

Mon 9/21

9:15 am-8:33 pm

2 stops25h 18m

$1,312

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

12:39 pm-8:30 am

2 stops27h 51m

Sydney Kingsford Smith

Tue 12/8

10:40 am-12:05 am

2 stops29h 25m

$1,312

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 9/1

1:50 pm-6:55 am

2 stops27h 05m

Sydney Kingsford Smith

Wed 9/9

10:20 am-7:07 pm

2 stops22h 47m

$1,361
Quickest round-trip

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

1:55 pm-9:20 am

2 stops27h 25m

Sydney Kingsford Smith

Tue 12/8

9:20 am-1:33 pm

1 stop20h 13m

$1,361

LouisvilleSydney

SDF - SYD

SDFSYD

Louisville Intl

Tue 12/1

1:55 pm-9:20 am

2 stops27h 25m

Sydney Kingsford Smith

Tue 12/8

9:20 am-1:33 pm

1 stop20h 13m

$1,362

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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2

See travel insights to Sydney from

How to get the cheapest flight ticket from Louisville to Sydney

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Sydney?

In general, March is the cheapest month to fly from Louisville to Sydney. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $0. If you are unable to visit Sydney during the month of March, then departing from Louisville during the month August is also very affordable. Most momondo users find prices during this month for around $1,191.

Can stopping save me money on Louisville to Sydney flights?

You could potentially save up to 4% on your flight if you consider stops on a Louisville to Sydney flight.

When to book flights from Louisville to Sydney

Are you open to changing your travel dates? Check out the ideal times to fly from Louisville to Sydney according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Louisville to Sydney (SDF to SYD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Louisville to Sydney

Fastest flight time

21h 25m

Direct flights

None
The fastest flight from Louisville to Sydney takes 21h 25m
There are no direct flights from Louisville to Sydney. There are no popular flight routes from Louisville to Sydney.
Search flight deals

Frequently asked questions about flying from Louisville to Sydney

  • How far is Louisville Intl to Sydney Kingsford Smith by plane?

    A flight from Louisville Intl to Sydney Kingsford Smith will travel around 9284.6 mi. A reasonable flight in good conditions will take 21h 25m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    Prices for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Louisville Intl Airport to Sydney Kingsford Smith Airport?

  • How old do you have to be to fly from Louisville Intl Airport to Sydney Kingsford Smith Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Louisville Intl Airport to Sydney Kingsford Smith Airport.

  • What documentation or ID do you need to fly to Sydney Kingsford Smith Airport?

    The required travel and health documents for your Sydney Kingsford Smith Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sydney Kingsford Smith Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Louisville to Sydney?

Best airlines flying from Louisville to Sydney

Compare and see reviews for airlines that fly from Louisville to Sydney with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $662Free CancellationRating
7.8
8,483 reviews
Search Delta flights
United AirlinesPriceFrom $1,212Free CancellationRating
7.4
10,059 reviews
Search United Airlines flights

Traveling to a place near Sydney?

Book flights to Sydney if you plan to visit one of these locations
Parramatta
Bondi Beach
Wollongong
Penrith
Katoomba
Leura
Cronulla
Randwick
Manly
Lithgow
Coogee
Terrigal
Charlestown
Swansea

Why use momondo?

Why should I use momondo to find a flight deal from Louisville to Sydney?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Louisville to Sydney for you.

Can I find flights from Louisville to Sydney with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Louisville to Sydney flights to just show those with flexible booking policies.

How can momondo help me find flights from Louisville to Sydney?

momondo provides multiple filters to help you find the best flight to Sydney from Louisville. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Louisville to Sydney right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Louisville to Sydney now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sydney and let you know when they change.

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